Excel导入数据批量生产建表sql语句

一、导入jar包

1、commons-collections4-4.1.jar

2、jxl-2.6.12.jar

3、poi-3.17.jar

4、poi-ooxml-3.17.jar

5、poi-ooxml-schemas-3.17.jar

6、spring-core-4.3.19.RELEASE

7、xmlbeans-2.6.0.jar

二、excel模板构建

三、（普通java工程）编写java代码

import jxl.Sheet;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.DataFormatter;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.util.StringUtils;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

public class Test {

    public static void main(String[] args) {

        try {
            FileInputStream fileInputStream = new FileInputStream(
                    new File("D:\\OneDrive\\桌面\\test.xlsx"));
            XSSFWorkbook wb = new XSSFWorkbook(fileInputStream);

            int numberOfSheets = wb.getNumberOfSheets();//获取sheel页的个数
            XSSFSheet sheet = null;
            for (int i = 0; i < numberOfSheets; i++) {
                sheet = wb.getSheetAt(i); // sheet 索引
                createSql( sheet);
            }

            wb.close();

        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static void createSql(XSSFSheet sheet) {
        String sheetName = sheet.getSheetName();

        int lastRowNum = sheet.getLastRowNum();
        Row rowLast = sheet.getRow(lastRowNum);
        String tableName = new DataFormatter().formatCellValue(rowLast.getCell(0));

        Row row = null;
        Cell cell = null;//英文表
        Cell cell2 = null;//中文表
        Cell cell3 = null;//字段名
        Cell cell4 =null; //字段中文名
        Cell  cell5 = null ;//数据类型
        Cell  cell6 =null;//数据最大长度
        Cell  cell7 =null ;//小数位长度
        Cell  cell8 =null ;//是否可为空
        Cell  cell9=null; //是否主键
        String columName = null; //列名
        String columType = null; //列类型
        String columComent = null;//列注释
        String columLength = null;//列长度

        String sqlCont = "";
        StringBuilder strsql= new StringBuilder();

        for (int i = 1; i <= lastRowNum; i++) {
            row = sheet.getRow(i);
            cell = row.getCell(0); // 表英文名
            if (cell != null && !StringUtils.isEmpty(cell.getStringCellValue())) {
                cell2 = row.getCell(1); // 表中文名
                cell3 = row.getCell(4); // 英文字段
                cell4= row.getCell(5);//字段中文
                cell5 =row.getCell(9);//数据类型
                cell6=row.getCell(11);//字段长度
                cell7=row.getCell(12);//小数位数
                cell8=row.getCell(14);//是否可为空
                cell9=row.getCell(15);//是否主键

                columName = cell3.getStringCellValue();
                columType = cell5.getStringCellValue();
                columComent = cell4.getStringCellValue();
                columLength=new DataFormatter().formatCellValue(cell6);

                if (cell5!=null && cell5.toString().toLowerCase().equals("varchar2")){
                    sqlCont += columName + "   " + columType.replace("varchar2","varchar") +"("+columLength+")"+ "  DEFAULT NULL COMMENT  '" + columComent
                            + "',\n";
                }
                else if (cell5!=null && cell5.toString().toLowerCase().equals("char")){
                    sqlCont += columName + "   " + columType.replace("varchar2","varchar") +"("+columLength+")"+ "  DEFAULT NULL COMMENT  '" + columComent
                            + "',\n";
                }else if (cell5!=null && cell5.toString().toLowerCase().equals("number") && cell7!=null && cell7.getNumericCellValue()!=0){
                    sqlCont += columName + "   " + columType +"("+columLength+","+(int)cell7.getNumericCellValue()+")"+ "  DEFAULT NULL COMMENT  '" + columComent
                            + "',\n";
                }else{
                    sqlCont += columName + "   " + columType +"("+columLength+")"+ "  DEFAULT NULL COMMENT  '" + columComent
                            + "',\n";
                }

            }
        }

        String sqlStart = "CREATE TABLE test_" + cell+ "(\n";
        String sqlEnd = "\n)\nCOMMENT  '" + cell2 + "'\nclustered by ( xxxx ) into 13 buckets STORED AS ORC tblproperties(\"transactional\"=\"true\"\");";

        String sql = sqlStart + sqlCont.substring(0, sqlCont.length() - 2) + sqlEnd;

        System.out.println(sql);
    }
}